Re: [PATCH v3] PCI: hv: Warn when wait_for_response() waits indefinitely

A guest can wait indefinitely in wait_for_response() for the host to
send either a rescind message or a packet completion. If the
host does not send either, the guest can remain blocked with no
diagnostic indicating a reason.
This was observed during a guest kernel upgrade in which the
host-side application handling the PCI channel faulted, causing the
guest to never receive the completion request.
Add a warning in wait_for_response() when the wait exceeds
a timeout so that such a hang is visible in the guest's kernel log
and can be correlated with host-side state.

Suggested-by: Michael Kelley <redacted>
Signed-off-by: Sahil Chandna <redacted>

Sashiko has reviewed this patch and found no issues. It looks great!

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260908113009.3005964-1-sahilchandna@linux.microsoft.com?part=1